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    How to judge the quality of multi-layer PCB board from color

    | 08:13, Wednesday 4 September 2019 | 0 commentaires | Lien
    source: http://www.lhd-pcb.com How to judge the quality of multi-layer PCB circuit boards from PCB color. Today, let's explain how the color of the PCB affects its performance. How should we judge the quality of multi layer PCB boards? First, the PCB acts as a printed circuit board and mainly provides interconnection between electronic components. There is no direct relationship between color and performance. The difference in pigment does not affect the performance of the appliance. However, whether the performance of the PCB is good or bad is determined by the materials used (high Q), wiring design and several layers of boards. In the process of washing the PCB, black is the most likely to cause chromatic aberration. If the raw materials and manufacturing processes used in the PCB factory are slightly deviated, the PCB defect rate will increase due to chromatic aberration. This directly leads to an increase in production costs. In fact, the raw materials of PCB are everywhere in our daily life, that is, glass fiber and resin. The glass fiber is combined with the resin and hardened to become a board that is insulated, insulated, and not easily bent. This is the PCB substrate. Of course, a PCB substrate that is made up of glass fiber and resin cannot transmit signals. Therefore, on a PCB substrate, the manufacturer will cover a layer of copper on the surface, so the PCB substrate can also be called a copper-clad substrate. Since the black PCB's circuit traces are difficult to identify, it will increase the difficulty of repair and debugging during the R&D and after-sales phases. Generally, if there is no strong RD (R&D) designer and a strong maintenance team, the black PCB will not be easily used of. It can be said that the use of black PCB is a brand's confidence in the RD design and the post-maintenance team. From the side, it is also a manifestation of the manufacturer's self-confidence. The color of the PCB is also a matter of learning. For these reasons. Many manufacturers are designing PCB boards for their products, and they will carefully consider the colors.
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